Finding the Third Proportional to 144,756 and 318,958.50

Step by Step Solution

1. Step 1: Write the proportion equation
   144,756 : 318,958.50 = 318,958.50 : x
2. Step 2: Convert to fraction form
   144,756/318,958.50 = 318,958.50/x
3. Step 3: Cross multiply
   144,756x = 318,958.50 × 318,958.50
4. Step 4: Simplify right side
   144,756x = 101,734,524,722.25
5. Step 5: Solve for x
   x = 101,734,524,722.25/144,756
6. Step 6: Final answer
   x = 702,800.05